/*
 * Copyright (C) 2013 AndXmppSDK Project <hljdrl@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.drl.xmpp.packet;

import org.jivesoftware.smack.packet.IQ;

/**
 * This extension represents a  iq ping.
 * http://xmpp.org/extensions/xep-0202.html
 * XEP-0202: Entity Time
 */
public class LastExtension extends IQ {

    /**  Namespace of the Ping XEP. */
    public static final String NAMESPACE = "jabber:iq:last";

    /** Xml element name for the ping. */
    public static final String ELEMENT = "query";


    /**
     * Create a ping iq packet.
     */
    public LastExtension() {
    }

    @Override
    public String getChildElementXML() {
	if (getType() == IQ.Type.RESULT)
	    return null;
        return "<" + ELEMENT + " xmlns=\"" + NAMESPACE + "\" />";
    }

}
